1A indicator with two functions: Check the phase sequence and indicate whether the phase is open. 2Wide voltage testing: The indicator can check three?phase AC voltage from 60V to 600V, with excellent performance. 3Easy to use: The LED light can show if the phase is open and it supports buzzer indication. 4Safe & reliable: Equipped with clips, easy to contact with the terminals and ensure safety and reliability. 5Portable design: small and lightweight, come with a carrying bag, convenient to take wit h you.Features: _x000D_1. A indicator with two functions: Check the phase sequence and indicate whether the phase is open. _x000D_2. Wide voltage testing: The indicator can check three-phase AC voltage from 60V to 600V, with excellent performance. _x000D_3. Easy to use: The LED light can show if the phase is open and it supports buzzer indication. _x000D_4. Safe & reliable: Equipped with clips, easy to contact with the terminals and ensure safety and reliability. _x000D_5. Portable design: small and lightweight, come with a carrying bag, convenient to take wit h you. _x000D_ _x000D_Specification: _x000D_Model: SP8030 _x000D_Operating voltage: 60 V~600V three-phase AC voltage _x000D_Measurable frequency range: 20Hz~400Hz _x000D_Using time for continuous measurement: _x000D_60 minutes maximum at 60V AC _x000D_4 minutes maximum at 600V AC _x000D_LED indicator functions: _x000D_Green for the correct phase sequence, intermittent beep _x000D_Red for reverse phase sequence, continuous beep _x000D_Item Size: Approx. 85 x 64 x 23mm / 3.3 x 2.5 x 0.9in (Excluding test wire)_x000D_Weight: Approx. 240g / 8.5oz _x000D_ _x000D_Package list: _x000D_1 * Phase Indicator _x000D_3 * Clips _x000D_1 * Bag